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Cryptosporidium muris in a Texas canine population
Philip J Lupo1, Rebecca C Langer-Curry, Mary Robinson
1Center for Infectious Disease, The University of Texas School of Public Health, Houston, Texas 77030, USA. Philip.J.Lupo@uth.tmc.edu
The American Journal of Tropical Medicine and Hygiene
|June 11, 2008
Summary
Canine Cryptosporidium infections are common, with 71% of kenneled dogs showing active infections. This study identified Cryptosporidium muris in dogs, highlighting potential zoonotic transmission risks to humans.
Area of Science:
- Veterinary Parasitology
- Molecular Biology
- Public Health
Background:
- Recent molecular advancements reveal novel Cryptosporidium species in various hosts.
- The potential for Cryptosporidium transmission from dogs to humans warrants further investigation due to public health implications.
Purpose of the Study:
- To determine the prevalence of Cryptosporidium species in kenneled dogs.
- To identify the specific Cryptosporidium species infecting these dogs.
Main Methods:
- A group of kenneled dogs was screened for active Cryptosporidium infections.
- Positive samples underwent polymerase chain reaction (PCR) amplification of the 18S ribosomal RNA gene.
- Restriction fragment length polymorphism (RFLP) analysis and genetic sequencing were used for species identification.
Main Results:
- A high prevalence of active Cryptosporidium infection (71%) was observed in the kenneled dogs.
- All six analyzed positive samples were identified as Cryptosporidium muris.
- This represents the first documented instance of naturally occurring Cryptosporidium muris infection in a canine.
Conclusions:
- The high prevalence of Cryptosporidium infections in dogs suggests they may act as reservoirs for certain species.
- The identification of Cryptosporidium muris in asymptomatic dogs supports their potential role in zoonotic transmission to humans.
- Further research is recommended to fully understand the public health impact of canine-associated Cryptosporidium infections.
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